Minimizing coupling loss by selection of twist pitch lengths in multi-stage cable-in-conduit conductors
Minimizing coupling loss by selection of twist pitch lengths in multi-stage cable-in-conduit conductors
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DOI：
10.1088/0953-2048/27/1/015006
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发表时间：
2013
影响因子：
3.6
通讯作者：
Gabriella Rolando;Arnaud Devred;A. Nijhuis
中科院分区：
文献类型：
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作者：
Gabriella Rolando;Arnaud Devred;A. Nijhuis
数字代码大奖-ACDC(van Lanen等人2010低温50 139-48，van Lanen等人2011 IEEE Trans.APPL超级棒。1926-9，van Lanen等人，2012 Supercond。SCI。泰克诺。25 025012)允许对导管中电缆导体(CIC)的电磁性能进行快速参数研究。本文应用该程序分析了多级ITER型CICC的扭转节距序列与耦合损耗之间的关系。计算结果表明，在所分析的导线中，当连续布线阶段的绞距长度比接近1时，耦合损耗最小。还预测，通过仔细选择级间绞距比，在初始阶段按长绞距方案布线的CICC可以获得比短间距导线更低的耦合损耗。在ITER中心螺线管不同螺距序列的原型导线上进行的交流损耗测量验证了结果。
The numerical code JackPot-ACDC (van Lanen et al 2010 Cryogenics 50 139–48, van Lanen et al 2011 IEEE Trans. Appl. Supercond. 21 1926–9, van Lanen et al 2012 Supercond. Sci. Technol. 25 025012) allows fast parametric studies of the electro-magnetic performance of cable-in-conduit conductors (CICCs). In this paper the code is applied to the analysis of the relation between twist pitch length sequence and coupling loss in multi-stage ITER-type CICCs. The code shows that in the analysed conductors the coupling loss is at its minimum when the twist pitches of the successive cabling stages have a length ratio close to one. It is also predicted that by careful selection of the stage-to-stage twist pitch ratio, CICCs cabled according to long twist schemes in the initial stages can achieve lower coupling loss than conductors with shorter pitches. The result is validated by AC loss measurements performed on prototype conductors for the ITER Central Solenoid featuring different twist pitch sequences.